Sound credits - True Final Ascent (thunderstorm weather)

"Thunderstorm Takes 07" by PNMCarrieRailfan
  https://freesound.org/s/680460/
  License: Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0)
  https://creativecommons.org/licenses/by-nc/4.0/
  Changes: played in segments, with pitch, volume and low-pass filtering varied at runtime.

"Lightning" (189909) by samc44 on Pixabay
  License: Pixabay Content License
